| Sumter to Cascais | 3,864.75 mi (6,219.72 km) |
| Sumter to Castelo Branco | 3,936.83 mi (6,335.72 km) |
| Sumter to Castro Daire | 3,891.41 mi (6,262.63 km) |
| Sumter to Celorico de Basto | 3,877.84 mi (6,240.78 km) |
| Sumter to Chamusca | 3,897.72 mi (6,272.78 km) |
| Sumter to Chaves | 3,896.34 mi (6,270.55 km) |
| Sumter to Cinfaes | 3,877.23 mi (6,239.80 km) |
| Sumter to Coimbra | 3,881.53 mi (6,246.72 km) |
| Sumter to Condeixa-a-Nova | 3,880.03 mi (6,244.30 km) |
| Sumter to Corroios | 3,880.23 mi (6,244.63 km) |
| Sumter to Coruche | 3,904.31 mi (6,283.39 km) |
| Sumter to Costa de Caparica | 3,875.23 mi (6,236.58 km) |
| Sumter to Covilha | 3,926.43 mi (6,318.97 km) |
| Sumter to Eiras | 3,881.12 mi (6,246.06 km) |
| Sumter to Elvas | 3,976.22 mi (6,399.10 km) |
